Advice is don't bother with a step down, do not use it myself and reports of others using for years at 5.6 -6v and no ill effects. Also rational is that fully charged batteries used of old reached those voltages anyway.

I understand this but the specs say 4.8V. Wouldn't this cause a servo failure in the long run? I brought the step down but won't have any place to put it. So, I'm going without but don't want to crash the chopper. Why is it rated at 4.8V if it can do 6V?